Lesson Plan for Senior Secondary 2 - Auto Mechanical - Carburetor And Air Cleaner Or Filter

### Lesson Plan for Senior Secondary 2: Carburetor and Air Cleaner/Filter **Subject:** Auto Mechanical **Grade Level:** Senior Secondary 2 (Grade 11) **Lesson Title:** Carburetor and Air Cleaner/Filter **Duration:** 90 minutes --- #### Objectives: By the end of this lesson, students will be able to: 1. Explain the function of a carburetor in an internal combustion engine. 2. Identify and describe the components of a carburetor. 3. Understand the role of the air cleaner/filter in an engine. 4. Demonstrate basic maintenance procedures for carburetors and air cleaners/filters. --- #### Materials Needed: - Whiteboard and markers - Projector and laptop for presentation - Sample carburetor and air cleaner/filter - Screwdrivers, wrenches, and other basic tools - Cleaning supplies (e.g., compressed air, cleaning solvent) - Paper handouts with diagrams and notes - Work gloves and safety goggles --- #### Lesson Outline: 1. **Introduction (10 minutes)** - Greeting and attendance. - Brief overview of the lesson objectives. - Engage students with a question: "What role does air play in engine performance?" 2. **Theoretical Background (20 minutes)** - Present a short lecture on carburetors: - Definition and function of a carburetor. - How the carburetor mixes air and fuel for the engine. - Components of a carburetor: float chamber, venturi, throttle valve, and jets. - Show diagrams and real carburetor models for better understanding. - Present a short lecture on air cleaners/filters: - Purpose of air cleaners/filters in protecting the engine. - Different types of air filters: paper, foam, and cloth. - Importance of regular maintenance. 3. **Visual Demonstration (15 minutes)** - Demonstrate the physical components of a carburetor and an air cleaner/filter. - Open up the carburetor to show internal parts. - Show a clogged vs. clean air filter and discuss the implications. - Use the projector to display close-up images and videos if available. 4. **Hands-On Activity (30 minutes)** - Split students into small groups. - Distribute sample carburetors and air cleaners/filters to each group. - Task each group with: - Identifying each part of the carburetor. - Performing basic maintenance on the air cleaner/filter (cleaning or replacing). - Writing down the steps they took in the process and any observations. - Supervisors/teachers circulate to assist and ensure safety. 5. **Group Discussion and Q&A (10 minutes)** - Have each group share their findings and experiences. - Discuss any challenges they faced and how they solved them. - Answer any questions to clarify concepts and procedures. 6. **Summary and Review (5 minutes)** - Summarize the key points of the lesson. - Reinforce the importance of regular maintenance for optimal engine performance. - Discuss why understanding the carburetor and air filter is fundamental for automotive mechanics. 7. **Assignment (Optional)** - Assign a short written task for students to describe the steps involved in maintaining a carburetor and air cleaner/filter, due next class. - Encourage students to find additional resources or videos online for further understanding. --- #### Assessment: - Participation in group activities and discussions. - Observation of understanding during hands-on activity. - Evaluation of the written assignment (if assigned). --- #### Safety Considerations: - Ensure students wear work gloves and safety goggles during the hands-on activity. - Emphasize the proper handling of tools and components to avoid injury or damage. --- #### Extensions: - Plan a follow-up lesson that dives deeper into different types of carburetors (e.g., single-barrel, dual-barrel) and more advanced troubleshooting techniques. - Organize a field trip to a local automotive repair shop for real-world exposure. --- This lesson plan provides a comprehensive approach, mixing theoretical knowledge with practical, hands-on experience to ensure students grasp the importance and mechanics of carburetors and air cleaners/filters in automotive systems.